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30295141 = 174117401
BaseRepresentation
bin111001110010…
…0010001100101
32010000011010021
41303210101211
530223421031
63001155141
7515335012
oct163442145
963004107
1030295141
1116112208
12a18bab1
136379426
144048709
1529d6511
hex1ce4465

30295141 has 4 divisors (see below), whose sum is σ = 30314284. Its totient is φ = 30276000.

The previous prime is 30295123. The next prime is 30295147. The reversal of 30295141 is 14159203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14159203 = 107132329.

It can be written as a sum of positive squares in 2 ways, for example, as 5832225 + 24462916 = 2415^2 + 4946^2 .

It is a 3-Lehmer number, since φ(30295141) divides (30295141-1)3.

It is a cyclic number.

It is not a de Polignac number, because 30295141 - 215 = 30262373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30295147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6960 + ... + 10441.

It is an arithmetic number, because the mean of its divisors is an integer number (7578571).

It is a Poulet number, since it divides 230295140-1.

Almost surely, 230295141 is an apocalyptic number.

It is an amenable number.

30295141 is a deficient number, since it is larger than the sum of its proper divisors (19143).

30295141 is a wasteful number, since it uses less digits than its factorization.

30295141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19142.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 30295141 is about 5504.1021974524. The cubic root of 30295141 is about 311.7388957566.

The spelling of 30295141 in words is "thirty million, two hundred ninety-five thousand, one hundred forty-one".

Divisors: 1 1741 17401 30295141